eisenhardt



(No Model.) G.. P. EISBNHARDT.

MACHINE POR PRINTING OIL CLOTH. j No. 478,927. Patented July 12, 1892.

-CL 7 i 7 UNTTEE STATES PATENT r'OEEIcE.

GEORGE E. EIsENIIARDT, on PHILADELPHIA, PENNSYLVANIA, AssIGNoR To DIENELT a EIsENIIARDT, oE sAIvIE PLAGE.

MACHINE FOR PRINTING OIL-CLOTH.

SPECIFICATION forming part of Letters Patent No. 478,92*?, dated July 12, 1892.

Original application filed J une 1, 1891, Serial No. 394,736. Divided and this application led May 19, 1892. Serial No. 433,575. (No model.) Patented in England February 6, 1892, No. 2,316.

To @ZZ whom, it may concern,.-

Be it known that I, GEORGE F. EIsENIIARDT, a citizen of the United States, residing in the city and county of Philadelphia, and State of Pennsylvania, have invented certain new and useful Improvements in Machines for Printing Oil-Cloth, (which has been patented in Great Britain, N o. 2,316, dated February 6,

1892,) of which the following is a specification.

1o My invention relates to that class of printing-machines principally employed for printing fabrics of extended width, such as oilcloth; and it consists in certain details of improvement in said machines fully set forth hereinafter, and illustrated in the accompanying drawings, in which- Figure 1 is an enlarged end elevation of the printing-block frame and adj uncts. Fig. 2 is a sectional elevation on the line a G, Fig. 1.`

zo The side frames of the machine support any suitable number of printing-block frames B, each of which has two vertical end pieces D D sliding between guides 5 5, the vertical movement being imparted in any suitable manner.

The printing-block frame B is provided with a suitable cross-head connecting the end pieces and, as shown, is in the form of two I-beams bolted together and supporting the 3o printing-block holders 9. (Shown in dotted lines.

It is frequently necessaryin this class of machines to so set the cross-head as to secure a greater amount of pressure upon one end 5 than at the other. This has heretofore been attended with difficulty and has resulted in canting the printing-block frame in such manner as to bind the parts in their movements,

increasing the friction and impairing the ac,

4o curacy of the printing. To avoid these obj ections, instead of using a frame in which the cross-head and end pieces are rigidly connected, I make a frame in which each end piece is pivoted or otherwise jointed to the end of the cross-head-as, for instance, by eX- tending a lug 14 at each end of the cross-head between two ears 15 15 of the adjacent end piece and passing a bolt 16 through the lug and ears, as shown. This permits 011e end of the cross-head to be slightly elevated or de- 5o pressed without straining any of the connections or throwing the uprights out of alignment.

In machines as ordinarily construct-ed the adjustment of the end pieces of the printingblock frames at opposite sides of the machines will sometimes, owing to differences in wear, throw the cross-head slightly out of position at right angles to the side frames, causing the end pieces to bind in their bearings. To avoid 6o this I provide means for permitting the cross-l head to be set slightly at different angles to the end pieces without straining the connections which may then be tightened to bind the parts firmly together. As shown, the upper end of each section 4 of each end piece is separate from the remaining portion, and the two parts are connected ,by means of a bolt 24 passing vertically through lugs 25l 26 and provided withabinding-nut 27. It will be 7o evident that other connections may be employed for jointedly connecting each end of the cross-head to the adjacent end piece to permit the horizontal and vertical adjustment of the cross-head in respect to the end piece 7-5 without straining said connection.

While Vthe cross-head may be made in various ways, so as to secure accurate bearings for the adjustable carriers, I prefer to construct the same as shown in the drawings, Se

where between the I-beams 7 7 at each end 1 Iit a cast-metal web-piece 30, bored to receive transverse bolts 31, that clamp the beams thereto and provided with a projection consittuting the lug 14. S 5

Heretofore when necessary to wash the blocks it has been customary to raise the entire printing-block frame and its connections and to reverse the same by hand or by positively operating reversing devices, thus en- 9o tailing a considerable consumption of time and labor and necessitating a nice readjustment of the parts after each washing operation. I avoid this by connecting the crosshead detachably to the end pieces-as, for instance, by means of the detachable bolts 16,

the removal of which permits the cross-head only to be reversed with its blocks Without disturbing any of the other parts.

A ready mode of securing the automatic reversal of the cross-head is to provide the web-pieces 30 with trunnions 82, arranged below the center of gravity of the cross-head, so that when hooks are applied to the trunnions on pendent hoisting-chains and the latter are raised to lift the cross-head the superior weight of the upper part of the latter will cause it to turn readily to a reversed position, throwing the printing'blocks uppermost.

This application is a division of the application filed by me June l, 1891, Serial No. 394,736, wherein the subject-matter of this case is shown and described, but not claimed.

Without limiting myself to the precise construction and arrangement of parts described, I claim as my inventionl. The combination of the frame of a blockprinting machine having guides, a cross-head for supporting the printing-blocks, vertical end pieces on the cross-head movable in said guides, and horizontal joints connecting the cross-head and end pieces, substantially as set forth.

2. The combination of the frame of a blockpriniing machinehaving guides, a cross-head for supporting the printing-blocks, vertical end pieces on the cross-head movable in said guides, and vertical joints connecting the end pieces and cross-head, substantially as set forth.

3. The combination of the frame of ablockprinting machine, a cross-head for supporting the printing-blocks, vertical end pieces on said cross-head movable in guides of the frame, and vertical and horizontal joints connecting the cross-head and the end pieces, substantially as and for the purpose set forth.

4. In a block-printing machine, the combination of the cross-hcad for the printingblocks, and end pieces to which the cross-head is detachably connected, and trunnions projectingfromthe cross-head and arranged below the center of gravity thereof, substantially as and for the purpose set forth.

5. In a block-printing machine, the combination, with the cross-head for the printingblocks, consisting of connected parallel I- beams and intermediate web-pieces provided with projecting lugs, of end pieces having ears and bolts passing through the lugs and ears, and guides for the end pieces, substantially as described.

In testimony whereof I have signed my name to this specification in the presence ol' two subscribing Witnesses.

GEORGE F. EISENIIARDT.

Witnesses:

WM. F. SIEGENER, \VM. ll. DOERING. 

